Wilbers Fork Springs

[sparky3008]

Do you have to call/email for the springs as on that site I only see the shocks?

 

[twowheelnut]

Give Klaus a call, let him know that 'we' recommended you to him and see if he won't kick in a discount... He'll also give you the info on the springs. Good guy.

 

[sparky3008]

Thanks

 

[radman]

Any reason it has to be fork oil? Would any other petroleum product work just as well?

Automatic tranny fluid. But I'm sure the pro's will jump in to tell me how wrong that is.

 

[twowheelnut]

Automatic tranny fluid.

Really? That won't mess up the seals and ****?

 

[FJRocket]

Yamaholic will have to tell the dif between the bikes. My *** isn't that dialed in. Neither is my bike. But it's a DAMN sight better than it was before I changes suspensions.

CLaus will even get your weight, riding characteristics, 1 up, 2 up, and set the shock up for you. It will be real close to dialed in from the get go.

If you plan on riding your FJR for any distance or any length of time, change the shock and springs. You'll be glad you did.

"I pitty the fool..." with stock suspension.

 

[radman]

Really? That won't mess up the seals and ****?

Not at all-a lot of guys use it exclusively. It's just a high quality, high detergent hydraulic oil.

 

[FJRocket]

TWN, you're stuck at 999? What up wit dat?

 

[twowheelnut]

Really? That won't mess up the seals and ****?

Not at all-a lot of guys use it exclusively. It's just a high quality, high detergent hydraulic oil.

Cool! Thanks for that tip. I'm going to try and change out the shock oil every year or so as I was shocked (ha, ha) at the amount of spooge in the OEM oil.

TWN, you're stuck at 999? What up wit dat?

No I'm not! Neener, neener, neener! :bleh:

 

[radman]

I use tranny fluid to flush fork internals, after laying in a big dose of brake clean. I only use fork oil so as to know the weight I put in. Can never be quite sure what tranny fluid is gonna be, but it's generally pretty light, 5w or so.

 

[Zzooomm]

Springs are springs. They all look more or less the same. But that doesn't mean they are the same. Different springrates can't be seen, but they determine how hard or soft the suspension feels. Japanese bikes are typically srpung way too soft, so an aftermarket spring with a higher springrate will cure the pogostick feeling of the originals.

The Wilbers springs are virtually the same spring rate as the stock springs (.78-1.0). Wilbers achieves a slightly higher static rate by increasing the preload on a progressive spring. They are considerably longer than the Yamaha and you end up with about 40 mm preload with the preload adjuster backed all the way out. Anyone intersted in some slightly used Wilbers fork springs can PM me for details.

 

[Woodstock]

Springs are springs. They all look more or less the same. But that doesn't mean they are the same. Different springrates can't be seen, but they determine how hard or soft the suspension feels. Japanese bikes are typically srpung way too soft, so an aftermarket spring with a higher springrate will cure the pogostick feeling of the originals.

The Wilbers springs are virtually the same spring rate as the stock springs (.78-1.0). Wilbers achieves a slightly higher static rate by increasing the preload on a progressive spring. They are considerably longer than the Yamaha and you end up with about 40 mm preload with the preload adjuster backed all the way out. Anyone intersted in some slightly used Wilbers fork springs can PM me for details.

You no like the Wilbers fork springs?

 

[dobias]

Radman,

I agree that we have no idea what the auto trans oil viscosity might be from brand to brand. However, unless you have the viscosity measurement of fork oil in centiStokes, you're still guessing. The SAE labeled weights of oils are a joke and the viscosities vary all over the map.

Example:

Silkolene 2 1/2w is virtually the same as Yamaha's #01 oil they label as 10w.

So I would say that Wilbers' instructions to use "7 1/2w" suggests a lighter oil than the stock Yamaha fork oil but may very well get you a much heavier fork oil (depnding on the brand). Yamaha's forks were designed for the same oil viscosity they use in their #01.

dobias <_<

 

[yamaholic]

Yep , auto-tranny fluid is fine. But you have no control over viscosity, an important tuning element. That's the sole reason I use real fork oil. And I agree Silkolene is really good stuff!

BTW, I found something to help flush forks! SeaFoam makes an Auto-tranny flush. I used auto tranny fluid and the flush last winter. While I could not see how clean it was, I can assure you a lot of crud came out after repeated flushings! Moreso than the year prior using only Bel-Ray fork oil.

I use brake cleaning fluid all the time, but am hesitant about using it in the forks as it tends to swell, then crack rubber. With other hydraulic-system specific flushing compounds out there that do not harm rubber, I could not justify using anything else.